Proposed SkCanvas API for preLoading textures to VRAM

include/core/SkDevice.h

 
 /*
  * Copyright 2010 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkDevice_DEFINED
@@ skipping 366 matching lines @@
      *  If the device does not recognize or support this filter,
      *  it just returns false and leaves result and offset unchanged.
      */
     virtual bool filterImage(const SkImageFilter*, const SkBitmap&, const SkMatrix&,
                              SkBitmap* result, SkIPoint* offset) = 0;
 
     // This is equal kBGRA_Premul_Config8888 or kRGBA_Premul_Config8888 if
     // either is identical to kNative_Premul_Config8888. Otherwise, -1.
     static const SkCanvas::Config8888 kPMColorAlias;
 
+    virtual void internalPrivate_PreLoad(const SkBitmap& bitmap, const SkIRect& rect);
+
 protected:
     // default impl returns NULL
     virtual SkSurface* newSurface(const SkImageInfo&);
 
     // default impl returns NULL
     virtual const void* peekPixels(SkImageInfo*, size_t* rowBytes);
 
     /**
      *  The caller is responsible for "pre-clipping" the src. The impl can assume that the src
      *  image at the specified x,y offset will fit within the device's bounds.
@@ skipping 56 matching lines @@
     SkMetaData* fMetaData;
 
 #ifdef SK_DEBUG
     bool        fAttachedToCanvas;
 #endif
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif